Glare-preventing device for lamps



"upwardsto such a=heig t that its Ithe Veyes lof other ir'oadueers.;i obyiousl the A device can be forfpreyenting' in Patented July 17;, 1923.`

Toall A,

-feia knoweth Beneden fsubeat of: the". King of' England: residing o in near.,Northwich,CheshreEng vide animprovedconstructon ofdevice for -eliminatirfgxlare ffromy motor road vehicle e like,` that isV to" sayy Vfor y conlamgeh Itrol' g'the'beamroflighti'romwsuchra-lamp so as "to direct'itronto theground.ror otheras desired, and Ito I roventi-it; sphreading :othercircumstaneesy-as well.1 f .The` invention .relates yto 1 glare-preventing A deviceeo--the typein rwhich there are royideda numberl offparallelhladee eet e wise inthe .beam xoaasfto limit any tendency of the beam to `s' 'been maden? or lt "e-evehicle- :headflamps' 111 which the blades aforesaid are set'horizoxifV tall and have their under sides polished tending tospread upwards is` therefore reflected downwards, and any 'li-'ight tendingto spread downwards is absorbe the blackcned surface of thel blades an is not reected upwards sothat the light is directed mainly parallel with the blades-with a small portion reflected downwards onto the road surface. According to is provided a lare-preventing devicey of the type above ascribed wherein the blades are mounted in a detachable frame which frame is so shaped as to be located within the body of the lamp immediately behind the glass and in front of the redactor. y In this way the device is suitable 1for fitting to any exiatin Alamp and does not require, as has hereto ore been the case, the fitting of a new front and glass to the lamp.

Accordin to a Vfurther feature of this invention t e device comprises a thin fiatV arcuate or annular member adapted vto fit against the front edge of the reflector in the small space available between it and the glass, and dat plate-members are mounted on the arcuate member at right-anilee to its plane so as to project into the re ector, these plate-members extending as chords across the arcuate member and being slotted amps,- o whichthefollowing 1s aepeciinea in L read-.'RSuch dey-ieee have this invention there eee-,edge to .rivg the pai-eue light.

contrcllillg'blades,V A y According-fw i et'another feature-ofthe .invention the bades A aforcsadnaamw@l o y ,very thlnendare'isetrvery close together; di; fmensionstwhmh-hgve Y Yed' practice being bladesOl fnelrthikepaced -,5 Intheeccompanyi lustrate' one.- embodiment of this .invention-,-

y ,Eigurefl iea Vfront'elewation Qf the; device 1- tobe-ittedztoalamp; n 4 A y a 'fFigure 2 is a, sectionlon the line 2,-2 of 5 'r e r.eferencej.ci1aracters Jindicatefkeiuf; parte throughoutthe drawings.` ilu The frame of thep-glare-prey ane-devia Aeompr-ises two. arcuate, linembers .lOll "5 shaped andgspaced `apart Ito lic una :circle ,which will `t Within the largest; part `ofithe' -lbpdyP Qffthe :lamp :as slm Figure 2. These 4members are, ccngteniently y stamped outfofsheet IriiLPC-rial en that the as shown vin-li-igizrc 3. iasmalle These members. 210,1-111areztherehyadapted tof lie wit t the end ilange =1351i oi the V redactor lofgthc iamp r and the opposed inner ange 13 of the front. 85

TheV members 10, 11 are provided with slots 14 which are spaced apart so that they 16 in the body 17 of the lamp.

The two members 10, 11 are connected together by late-like members 18, 19 which stand at rlght-angles to the plane of the members 10, 11 as shown most clearly in Figures 2 and 8. These plate members may 5 be stamped out of sheet material integrarly with the members 10, 11, or they may be separately formed and rigidly secured thereto in any desired manner. The members 18, 19 project rearwardly from lane of the members 10, 1 1 solas to lie within the reflector 16 of the lamp. The ends of these members are therefore cut away as shown at 2O to be accommodated within the conical part of the reflector. m5

The late members 18, 19 are each slotted from t eir rear edge 21 to a convenient depth, say about half the width of the memberaas shown at 22, and the light-controlln The b ades 23 themselves.I are each slotted from their forward edges so that when inlshowillg'the-device ina]e lampgrand 70 the 10 blades 23 are nselted in these slots. 110 

